The purpose of this study is to investigate the distribution characteristics polycyclic aromatic hydrocarbons (PAHs) in Chinese flowering cabbage at different growth stages, and provide reference for people's daily diet production activities. stages were divided into three periods: seedling stage (from first true leaf expansion fifth leaf), sixth appearance plant buds), stem formation buds harv...

The question of how leaf form is established has long intrigued plant biologists and has important ramifications in both natural and agricultural systems. Heterochrony refers to developmental changes in the timing of events that lead to changes in the size and/or shape of an organ. Heterochronic genes control the temporal dimension of development, in contrast with homeotic genes, which control ...

The question of how leaf form is established has long intrigued plant biologists and has important ramifications in both natural and agricultural systems. Heterochrony refers to developmental changes in the timing of events that lead to changes in the size and/or shape of an organ. Heterochronic genes control the temporal dimension of development, in contrast with homeotic genes, which control ...

livestock industry (CGC, 1996). Barley is also used for malt production and a small amount is used for human Understanding the phenological development of barley (Hordeum food. Understanding the development of barley in this vulgare L.) grown under field conditions in its major growing area in the northern Great Plains, the Canadian province of Alberta, is environment is crucial to continued ad...

We present an analytical and experimental study of split shape dose calculation correction by adjusting the position of the round leaf end position in an intensity-modulated radiation therapy treatment planning system. The precise light field edge position (Xtang.p ) was derived from 50% of the central axis dose created by nominal light field using geometry and mathematical methods. Leaf positi...

Abstract. Salinity constraints for Rice cultivation in Camargue mainly concern short periods (5-10 days) during the first cropping month (from germination to 5th leaf stages). Because of unfavourable climatic conditions, it is impossible to directly undertake breeding lines field screening. So greenhouse tests have been performed in order to specifically screen for varietal salt tolerance accor...

Two Þeld experiments were conducted in 1995Ð1996 to determine if there are common photosynthetic and vegetative growth responses among genotypes of maize, Zea mays L., to larval western corn rootworm, Diabrotica virgifera virgifera LeConte injury. SpeciÞc variables measured from rootworm infested and noninfested plants were midday leaf photosynthetic rate, plant growth stage, and plant height d...

Massive invasion of the litter dwelling beetle, Luprops tristis Fabricius (Coleoptera: Tenebrionidae), numbering about 0.5 to 4 million per residential building following summer showers, and their prolonged stay in a state of dormancy, make them an extreme nuisance in rubber tree plantation belts of the Western Ghats in south India. Food preference of post-dormancy adults, larvae and teneral ad...

BACKGROUND AND AIMS Changes in number of trichomes and in composition and concentrations of their exudates throughout leaf development may have important consequences for plant adaptation to abiotic and biotic factors. In the present study, seasonal changes in leaf trichomes and epicuticular flavonoid aglycones in three Finnish birch taxa (Betula pendula, B. pubescens ssp. pubescens, and B. pub...